On average, a car battery lasts between three and five years. However, that lifespan may be shorter if your battery is exposed to extreme conditions or you let it run out of charge multiple times. Ultimately, if you’re driving around with a battery that’s old enough for kindergarten, the odds of getting stranded with a dead car battery will keep going up.
Not sure how old your battery is? Your car battery comes with a “born on” date. Normally, it’s a letter and number corresponding to a month and year. The letter represents a month—A is January, B is February, C is March, D is April and so on. The number corresponds to the final digit of the year it was produced—6 is 2016, 7 is 2017, 8 is 2018, 9 is 2019, and so on.